#include "stdafx.h"
#pragma hdrstop

#include "cl_intersect.h"
#include "SoundRender_Core.h"
#include "SoundRender_Emitter.h"
#include "SoundRender_Target.h"
#include "SoundRender_Source.h"

CSoundRender_Emitter*	CSoundRender_Core::i_play(ref_sound* S, BOOL _loop, float delay)
{
	VERIFY					(S->_p->feedback==0);
	CSoundRender_Emitter* E	= new CSoundRender_Emitter();
	S->_p->feedback			=	E;
	E->start				(S,_loop,delay);
	s_emitters.push_back	(E);
	return E;
}

void CSoundRender_Core::update	( const Fvector& P, const Fvector& D, const Fvector& N )
{
	u32 it;

	if (0==bReady)				return;
    bLocked						= TRUE;
	float new_tm				= Timer.GetElapsed_sec();
	fTimer_Delta				= new_tm-fTimer_Value;
//.	float dt					= float(Timer_Delta)/1000.f;
	float dt_sec				= fTimer_Delta;
	fTimer_Value				= new_tm;

	s_emitters_u	++	;

	// Firstly update emitters, which are now being rendered
	//Msg	("! update: r-emitters");
	for (it=0; it<s_targets.size(); it++)
	{
		CSoundRender_Target*	T	= s_targets	[it];
		CSoundRender_Emitter*	E	= T->get_emitter();
		if (E) {
			E->update	(dt_sec);
			E->marker	= s_emitters_u;
			E			= T->get_emitter();	// update can stop itself
			if (E)		T->priority	= E->priority();
			else		T->priority	= -1;
		} else {
			T->priority	= -1;
		}
	}

	// Update emmitters
	//Msg	("! update: emitters");
	for (it=0; it<s_emitters.size(); it++)
	{
		CSoundRender_Emitter*	pEmitter = s_emitters[it];
		if (pEmitter->marker!=s_emitters_u)
		{
			pEmitter->update		(dt_sec);
			pEmitter->marker		= s_emitters_u;
		}
		if (!pEmitter->isPlaying())		
		{
			// Stopped
			xr_delete		(pEmitter);
			s_emitters.erase(s_emitters.begin()+it);
			it--;
		}
	}

	// Get currently rendering emitters
	//Msg	("! update: targets");
	s_targets_defer.clear	();
	s_targets_pu			++;
	// u32 PU				= s_targets_pu%s_targets.size();
	for (it=0; it<s_targets.size(); it++)
	{
		CSoundRender_Target*	T	= s_targets	[it];
		if (T->get_emitter())
		{
			// Has emmitter, maybe just not started rendering
			if		(T->get_Rendering())	
			{
				/*if	(PU == it)*/	T->fill_parameters	();
				T->update		();
			}
			else 	
				s_targets_defer.push_back		(T);
		}
	}

	// Commit parameters from pending targets
	if (!s_targets_defer.empty())
	{
		//Msg	("! update: start render - commit");
		s_targets_defer.erase	(std::unique(s_targets_defer.begin(),s_targets_defer.end()),s_targets_defer.end());
		for (it=0; it<s_targets_defer.size(); it++)
			s_targets_defer[it]->fill_parameters();
	}

	// update EAX
    if (psSoundFlags.test(ss_EAX) && bEAX)
	{
        if (bListenerMoved)
		{
            bListenerMoved			= FALSE;
            e_target				= *get_environment	(P);
        }

        e_current.lerp				(e_current,e_target,dt_sec);

        i_eax_listener_set			(&e_current);
		i_eax_commit_setting		();
	}

    // update listener
    update_listener					(P,D,N,dt_sec);
    
	// Start rendering of pending targets
	if (!s_targets_defer.empty())
	{
		//Msg	("! update: start render");
		for (it=0; it<s_targets_defer.size(); it++)
			s_targets_defer[it]->render	();
	}

	// Events
	update_events					();

    bLocked							= FALSE;
}

static	u32	g_saved_event_count		= 0;
void	CSoundRender_Core::update_events		()
{
	g_saved_event_count				= s_events.size();
	for (u32 it=0; it<s_events.size(); it++)
	{
		event&	E	= s_events[it];
		Handler		(E.first,E.second);
	}
	s_events.clear_not_free	();
}

void	CSoundRender_Core::statistic			(CSound_stats*  dest, CSound_stats_ext*  ext )
{
	if (dest){
		dest->_rendered		= 0;
		for (u32 it=0; it<s_targets.size(); it++)	{
			CSoundRender_Target*	T	= s_targets	[it];
			if (T->get_emitter() && T->get_Rendering())	dest->_rendered++;
		}
		dest->_simulated	= s_emitters.size();
		dest->_cache_hits	= cache._stat_hit;
		dest->_cache_misses	= cache._stat_miss;
		dest->_events		= g_saved_event_count;
		cache.stats_clear	();
	}
	if (ext){
		for (u32 it=0; it<s_emitters.size(); it++){
			CSoundRender_Emitter*	_E = s_emitters[it];	
			CSound_stats_ext::SItem _I;
			_I._3D					= !_E->b2D;
			_I._rendered			= !!_E->target;
			_I.name					= _E->source()->fname;
			_I.params				= _E->p_source;
			_I.volume				= _E->smooth_volume;
			if (_E->owner_data){
				_I.game_object		= _E->owner_data->g_object;
				_I.game_type		= _E->owner_data->g_type;
				_I.type				= _E->owner_data->s_type;
			}else{
				_I.game_object		= 0;
				_I.game_type		= 0;
				_I.type				= st_Effect;
			}
			ext->append				(_I);
		}
	}
}



float CSoundRender_Core::get_occlusion_to( const Fvector& hear_pt, const Fvector& snd_pt, float dispersion )
{
	float occ_value			= 1.f;

	if (0!=geom_SOM){
		// Calculate RAY params
		Fvector	pos,dir;
		pos.random_dir			();
		pos.mul					(dispersion);
		pos.add					(snd_pt);
		dir.sub					(pos,hear_pt);
		float range				= dir.magnitude	();
		dir.div					(range);

#ifdef _EDITOR
		ETOOLS::ray_options		(CDB::OPT_CULL);
		ETOOLS::ray_query		(geom_SOM,hear_pt,dir,range);
		u32 r_cnt				= ETOOLS::r_count();
		CDB::RESULT*	_B 		= ETOOLS::r_begin();
#else
		geom_DB.ray_options		(CDB::OPT_CULL);
		geom_DB.ray_query		(geom_SOM,hear_pt,dir,range);
		u32 r_cnt				= geom_DB.r_count();
		CDB::RESULT*	_B 		= geom_DB.r_begin();
#endif            
		if (0!=r_cnt){
			for (u32 k=0; k<r_cnt; k++){
				CDB::RESULT* R	 = _B+k;
				occ_value		*= *(float*)&R->dummy;
			}
		}
	}
	return occ_value;
}

float CSoundRender_Core::get_occlusion(Fvector& P, float R, Fvector* occ)
{
	float occ_value			= 1.f;

	// Calculate RAY params
	Fvector base			= listener_position();
	Fvector	pos,dir;
	float	range;
	pos.random_dir			();
	pos.mul					(R);
	pos.add					(P);
	dir.sub					(pos,base);
	range = dir.magnitude	();
	dir.div					(range);

	if (0!=geom_MODEL){
		bool bNeedFullTest	= true;
		// 1. Check cached polygon
		float _u,_v,_range;
		if (CDB::TestRayTri(base,dir,occ,_u,_v,_range,true))
			if (_range>0 && _range<range){occ_value=psSoundOcclusionScale; bNeedFullTest=false;}
		// 2. Polygon doesn't picked up - real database query
		if (bNeedFullTest){
#ifdef _EDITOR
			ETOOLS::ray_options		(CDB::OPT_ONLYNEAREST);
			ETOOLS::ray_query		(geom_MODEL,base,dir,range);
			if (0!=ETOOLS::r_count()){ 
				// cache polygon
				const CDB::RESULT*	R = ETOOLS::r_begin			();
#else
			geom_DB.ray_options		(CDB::OPT_ONLYNEAREST);
			geom_DB.ray_query		(geom_MODEL,base,dir,range);
			if (0!=geom_DB.r_count()){ 
				// cache polygon
				const CDB::RESULT*	R = geom_DB.r_begin		();
#endif            
				const CDB::TRI&		T = geom_MODEL->get_tris	() [ R->id ];
				const Fvector*		V = geom_MODEL->get_verts	();
				occ[0].set			(V[T.verts[0]]);
				occ[1].set			(V[T.verts[1]]);
				occ[2].set			(V[T.verts[2]]);
				occ_value			= psSoundOcclusionScale;
			}
		}
	}
	if (0!=geom_SOM){
#ifdef _EDITOR
		ETOOLS::ray_options		(CDB::OPT_CULL);
		ETOOLS::ray_query		(geom_SOM,base,dir,range);
		u32 r_cnt				= ETOOLS::r_count();
        CDB::RESULT*	_B 		= ETOOLS::r_begin();
#else
		geom_DB.ray_options		(CDB::OPT_CULL);
		geom_DB.ray_query		(geom_SOM,base,dir,range);
		u32 r_cnt				= geom_DB.r_count();
        CDB::RESULT*	_B 		= geom_DB.r_begin();
#endif            
		if (0!=r_cnt){
			for (u32 k=0; k<r_cnt; k++){
				CDB::RESULT* R	 = _B+k;
				occ_value		*= *(float*)&R->dummy;
			}
		}
	}
	return occ_value;
}













